1 | const parseLanguageList = require('./parse-language-list');
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2 | const availableLocaleIds = require('./locale-ids');
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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11 |
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12 |
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13 | const parseLocaleId = (input, localeIds = availableLocaleIds) => {
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14 |
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15 |
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16 | if (typeof input === 'string' && input.indexOf(';') > -1)
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17 | input = parseLanguageList(input);
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18 |
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19 |
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20 | if (Array.isArray(input)) {
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21 | let id;
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22 |
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23 | input.some(thisId => {
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24 | id = checkItem(thisId, localeIds);
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25 | return id;
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26 | });
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27 |
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28 | return id || localeIds[0];
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29 | } else if (!input && typeof navigator !== 'undefined')
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30 | return parseLocaleId(
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31 | navigator.languages ||
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32 | navigator.language ||
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33 | navigator.browserLanguage ||
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34 | navigator.systemLanguage ||
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35 | navigator.userLanguage ||
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36 | localeIds[0],
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37 | localeIds
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38 | );
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39 | else if (input) return checkItem(input, localeIds) || localeIds[0];
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40 |
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41 | return localeIds[0];
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42 | };
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43 |
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44 | module.exports = parseLocaleId;
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45 |
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46 |
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47 |
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48 |
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49 |
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50 |
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51 |
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52 |
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53 |
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54 |
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55 | const normalize = localeId => localeId.toLowerCase().replace(/_/g, '-');
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56 |
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57 |
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58 |
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59 |
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60 |
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61 |
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62 |
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63 | const getLocaleBase = (localeId, seperator = '-') =>
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64 | localeId.split(seperator)[0];
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65 |
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66 |
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67 |
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68 |
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69 |
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70 |
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71 |
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72 | const checkItem = (input, localeIds = availableLocaleIds) => {
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73 | const inputNormalized = normalize(input);
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74 | const localeIdsNormalized = localeIds.map(normalize);
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75 |
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76 | let result;
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77 |
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78 |
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79 | localeIdsNormalized.some((thisLocaleId, index) => {
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80 | if (thisLocaleId === inputNormalized) {
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81 | result = localeIds[index];
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82 | return true;
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83 | }
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84 | return false;
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85 | });
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86 | if (result) return result;
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87 |
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88 |
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89 |
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90 |
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91 | const baseLocale = getLocaleBase(inputNormalized, '-');
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92 |
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93 |
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94 | localeIdsNormalized.some((thisLocaleId, index) => {
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95 | if (thisLocaleId === baseLocale) {
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96 | result = localeIds[index];
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97 | return true;
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98 | }
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99 | return false;
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100 | });
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101 | if (result) return result;
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102 |
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103 |
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104 | localeIdsNormalized.some((thisLocaleId, index) => {
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105 | const thisBaseLocale = getLocaleBase(thisLocaleId, '-');
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106 | if (thisBaseLocale === baseLocale) {
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107 | result = localeIds[index];
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108 | return true;
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109 | }
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110 | return false;
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111 | });
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112 | if (result) return result;
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113 |
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114 | return null;
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115 | };
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